◎ 题干
She is a well­known doctor now, but she ________ as a cleaner at the hospital for five years.
A.has workedB.worked
C.had workedD.works
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“ She is a well­known doctor now, but she ________ as a cleaner at the hospital for five years.A.has workedB.workedC.had workedD.works…”主要考查了你对  【一般过去时】【一般过去时的被动语态】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。